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Thread: have anybody ever tried to "groove" the head?

  1. #1
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    Default have anybody ever tried to "groove" the head?

    I've been reading about that grooving method and i was wondering if anyone of you guys have ever tried or know of somebody that has with goo results?

    It seems that you can run more boost or compression ratio without detonation????

    Here there's the info:
    http://somender-singh.com/content/view/7/49/

    photos

    Sorry if that topic was already posted before. I did search but didn't find anything.

    This is taken from a forum in UK:
    Over the last two years I have grooved heads for more than twenty engines, I lost count. Most of these are performance or race only Generation I, II or III SBC. At first the results appeared to be rather vague, until I realized what was happening. The best way to describe it is: this modification improves the quality combustion to a point that it changes the characteristics of the engine. The limits of the engine are altered, the modification allows higher compression with out detonation, lean burn and ignition advance limits are changed and warm up periods are reduced. Fuel enrichment functionally can be reduced or eliminated completely.
    What do you guys think?
    Last edited by mikyrc; 01-05-2007 at 09:36 PM.
    1991 Eagle Talon TSI AWD totally restored, rebuilt and upgraded.
    1992 Mitsubishi Eclipse GSX (Parts car)
    1997 Mitsu Eclipse GST (SOLD)

  2. #2
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    Default

    never tried this. it does sound like a decent idea and would work on some poorly designed heads. just maybe not on ours.
    Quote Originally Posted by 18lbsgsx
    Holy shit are you really doing this? You sir are a GOD.
    seven53
    http://www.ds-map.net1g native speed density
    www.dsmchips.com
    http://en.wikipedia.org/wiki/Eagle_Talon
    http://members.shaw.ca/costall/ECUprimer/

  3. #3
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    1991 Eagle Talon TSI AWD totally restored, rebuilt and upgraded.
    1992 Mitsubishi Eclipse GSX (Parts car)
    1997 Mitsu Eclipse GST (SOLD)

  4. #4
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    This was covered in Popular Science. It seems very logical. In one instance he was able to achieve such a robust and stable combustion that you could count the fan blades turn individually.
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  5. #5
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    Wouldn't be too hard to test this on our motors, spare cylinder heads are a easy enough to come by. But the question to ask first is what possible disadvantages might this have? Would a groove possibly weaken the head and make it prone to crack? Would the edges of the groove provide a hot spot that could cause detonation in a high boost turbo motor?
    1991 Talon AWD

  6. #6
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    Well I'm glad someoen else out there reads various crap too!
    I was planning on doing some dynoing on this, a friend is going to donate a 318 Mopar for the test, so we can do whatever and not really cry if it goes south.
    Anyway, I am going to assume that this would be a lot better idea for improving old heads (like muscle car heads) rather than something that had thought/ computer engineering into it (4g63 heads). You may end up making the combustion worse by doing this on something that works good, like an LS1.
    Then again, nothing ventured, nothing gained.

    68

  7. #7
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    On the UK forums i visited, there's a lot of people doing it on their SAABs and it works for them.
    And as i've heard some people on Hondas have tried it too with good results.
    A friend of mine is going to try it on his 3000GT VR4.

    Let's see what time will say.


    More info:
    http://jeremiahsviolins.com/grooved2.htm

    Some coments from people experiences:
    http://forums.turbobricks.com/showthread.php?t=74370
    Last edited by mikyrc; 01-07-2007 at 01:48 PM.
    1991 Eagle Talon TSI AWD totally restored, rebuilt and upgraded.
    1992 Mitsubishi Eclipse GSX (Parts car)
    1997 Mitsu Eclipse GST (SOLD)

  8. #8
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    a friend of mine is going to test it on his GSX.

    http://www.clubjapo.com/foro/viewtop...=asc&start=540

    1991 Eagle Talon TSI AWD totally restored, rebuilt and upgraded.
    1992 Mitsubishi Eclipse GSX (Parts car)
    1997 Mitsu Eclipse GST (SOLD)

  9. #9
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    Tell your friend to drop the dremel and step away. I predict never ending head gasket sealing problems and if it seals for a while, at least some good knock counts.

  10. #10
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    Quote Originally Posted by BISHILVR
    Tell your friend to drop the dremel and step away. I predict never ending head gasket sealing problems and if it seals for a while, at least some good knock counts.
    thats efin hilarious. ill have to side with you on this one. but, id like to add a poorly compressed uneven mixture.
    Quote Originally Posted by 18lbsgsx
    Holy shit are you really doing this? You sir are a GOD.
    seven53
    http://www.ds-map.net1g native speed density
    www.dsmchips.com
    http://en.wikipedia.org/wiki/Eagle_Talon
    http://members.shaw.ca/costall/ECUprimer/

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